The Siemens Industry Inc. Murray 20/40 Amp 3 in. Triplex Circuit Breaker provides overload and short-circuit protection of your home electrical system by switching wiring from high temperatures caused by excess current. This triplex circuit breaker offers a thermal-magnetic design with a 10,000 AIR rating.
- Thermal-magnetic circuit breakers are the key element for overload and short-circuit protection of your electrical system
- Triplex circuit breaker
- Includes two 1-pole 20 Amp and a 2-pole 40 Amp circuit breaker
- UL listed
- Learn More About Circuit Breakers Here in our Buying Guide.